Edwaed a



E., A. SMITH.

Lime Khj.

Y Patented April 19; 18621.l

III- 1 er. washington. D. c

UNTTE STATES PATENT EDWARD A. SMITH, OF ST. ALBANS, VERMONT.

BURNING' LIME.

T0 aZZ whom it may concern:

Be it known that I, EDWARD A. SMITH, of St. Albans, -1n the county ofFranklin and State of Vermont, have invented a new and usefulimprovement in the manner and mode of burning lime in a kiln of my ownpeculiar construction; and I do hereby declare that the following is afull and exact description thereoi", reference being had to the drawingsaccompanyin g, and to the letters of reference marked thereon, of which-Figure l is a perspective view, Fig. 2a halfsection, and Figs. 3andetsections, oftire chamber and grates.

The nature of my invention consists in providing a way to burn lime morerapidly and economically than by any other by the application of heatedblast to anthracite-coal tires in a kiln constructed for the easy andcorrespondingly quick delivery ofthe lime.

The kiln-stack cir a, Fig. 1, to be constructed of stone and brickfourteen feet square and ten feet deep, in which is the linie-pit Q,Fig. 2, in the center of the bottom of the stack, six feet in diameterand six feet in height, with an arched top terminating in the throatofthe boshes I?, Fig. 2, opening intoit, which throat consists of acast-iron frame eighteen inches square and two feet deep, to close whicha sliding door ot' cast-iron across its base is operated from theoutside, as seen at l), Fig. 1, by a rod attached, the entrance to thelime pit to be through a door, U, Fig. 1, four feet in height andeighteen inches wide, and an arched passage ot' the same dimensions asat B, Fig. 2, the depth ot the boshes R R, Fig. 2, to be three feet, andto be constructed with tire-brick, spreading from the throat tothe baseot' the. lining of the cupola, where they are six feet across. Ten feetfrom the bottom ot' the liniepit cast-iron plates in sections, as at NN, Fig. 2, surmount the structure, forming a foundation t'or the cupolaE, Fig. 1,which is constructed of boiler-plate and lined with commonbrick, as M M, Fig. 2, and with firebrick, as seen at O O, Fig. 2, andis twelve i'eet in diameter at the base and seven feet in diameter atthe top and fourteen feet high. Vithin the enlargement of the cupola atits base I con struct two circular tire-chambers three feet in heightand two feet Wide and four fee-t long, with ash-pits one foot deep, twofeet wide, and three feet long, as seen at E and G, Fig.

'1. The re chambers connect with the chainbers of the cupola by lines,as at F, Fig. 2, through its lining just above the boshes, the cupola tobe surmounted by castiron plates, as at I I, Fig. l, thirteen feetacross, bearing upon four columns, K K, Fig. 1, which stand upon thekilnstack, and upon which raised side plates, IL h, Fig. l, forming ahopper for the stone. Cast-iron pipes in form as seen at I I, Fig. 1,receive the blast, taking it over the escape heat down to the ashvpitGr, Fig. 1, from which it enters the re-chamber through the grates Itit, Fig. 4, thus applying a heated blast to ignited coal and forcing theintense heat thereby evolved upon a descending colp umn of lime stone inthe shaft M, Fig. 2, by which it rapidly parts with its carbonic-acidgas and at regular intervals is drawn into the lime-pit O, Fig. 2, bythe opening of the sliding door at D, Fig. 1, and, if necessary, poking`through the llues F, Fig. 2, after which, this door being shut, thetiring goes on, while the lime is being removed at leisure by means ot'a long-handled shovel operated through the passage B, Fig. 2.

I claim- 1. The application ot the heated blast to ignited anthracitecoal in a kiln having a cylindrica-l cone shaped cupola., combined witha boiler-plate, providing room in the base for theiire-cham bers,allconstructed and arranged as herewith described.

2. The lime-pit and door in the throat ofthe l boshes, providing for themore rapid delivery of the lime, and forming a gage or measure by whichto ascertain the amount drawn and to be drawn in the practical workingof the kiln, all constructed as herewith described.

EDWARD A. SMITH.

Witnesses:

WM. H.v FANOR, J. H. BAXTER.

